Abstract
Investigation on the effect of free-air CO2 enrichment (FACE) on biomass accumulation and distribution in different parts of rice plant treated with 200 mumol.mol-1 CO2 elevation under field condition showed that the dry matter accumulated from transplanting to 20th day after heading and the total biomass increased significantly, while the dry mater accumulated from 20th day after heading to maturity was significantly depressed under FACE treatment. The enhancement of both leaf area index (LAI) and net assimilation rate (NAR) under FACE treatment resulted in the increase of dry matter accumulated from transplanting to heading, while the dominant reason for the increase of dry matter accumulated during 20 days after heading was the slowed decline of LAI. The decline of dry matter accumulated from 20th day to maturity was mainly caused by the decrease of NAR. The percentage of dry matter distributed in stem and sheath increased under FACE treatment, while that in leaf decreased, and that in panicle showed no significant change. The content (%) and amount of soluble sugar and starch in stem and sheath at heading was significantly elevated under FACE. The grain yield of rice under FACE treatment could be significantly improved by raising biomass.
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Claims 14
Claim · model-written summary
FACE significantly increased dry matter accumulation from transplanting to 20 days after heading.
- Taxon
- rice
Oryza sativat0 - Treatment
- FACEe0
- Outcome
- dry matter accumulated from transplanting to 20th day after headinge0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Investigation on the effect of free-air CO2 enrichment (FACE) on biomass accumulation and distribution in different parts of rice plant treated with 200 mumol.mol-1 CO2 elevation under field condition showed that the dry matter accumulated from transplanting to 20th day after heading and the total biomass increased significantly”
t0“free-air CO2 enrichment on biomass accumulation and distribution in rice”
Claim · model-written summary
FACE significantly increased total biomass.
- Taxon
- riceOryza sativat0
- Treatment
- FACEe0
- Outcome
- total biomasse0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Investigation on the effect of free-air CO2 enrichment (FACE) on biomass accumulation and distribution in different parts of rice plant treated with 200 mumol.mol-1 CO2 elevation under field condition showed that the dry matter accumulated from transplanting to 20th day after heading and the total biomass increased significantly”
t0“free-air CO2 enrichment on biomass accumulation and distribution in rice”
Claim · model-written summary
FACE significantly depressed dry matter accumulation from 20 days after heading to maturity.
- Taxon
- riceOryza sativat0
- Treatment
- FACE treatmente0
- Outcome
- dry mater accumulated from 20th day after heading to maturitye0
- Direction
- depressede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the dry mater accumulated from 20th day after heading to maturity was significantly depressed under FACE treatment.”
t0“free-air CO2 enrichment on biomass accumulation and distribution in rice”
Claim · model-written summary
FACE enhanced leaf area index.
- Taxon
- riceOryza sativat0
- Treatment
- FACE treatmente0
- Outcome
- leaf area index (LAI)e0
- Direction
- enhancemente0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The enhancement of both leaf area index (LAI) and net assimilation rate (NAR) under FACE treatment”
t0“free-air CO2 enrichment on biomass accumulation and distribution in rice”
Claim · model-written summary
FACE enhanced net assimilation rate.
- Taxon
- riceOryza sativat0
- Treatment
- FACE treatmente0
- Outcome
- net assimilation rate (NAR)e0
- Direction
- enhancemente0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The enhancement of both leaf area index (LAI) and net assimilation rate (NAR) under FACE treatment”
t0“free-air CO2 enrichment on biomass accumulation and distribution in rice”
Claim · model-written summary
Higher LAI and NAR under FACE increased dry matter accumulation from transplanting to heading.
- Taxon
- riceOryza sativat0
- Outcome
- dry matter accumulated from transplanting to headinge0
- Direction
- increasee0
- Qualifier
- enhancement of both leaf area index (LAI) and net assimilation rate (NAR)e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The enhancement of both leaf area index (LAI) and net assimilation rate (NAR) under FACE treatment resulted in the increase of dry matter accumulated from transplanting to heading”
t0“free-air CO2 enrichment on biomass accumulation and distribution in rice”
Claim · model-written summary
A slower decline in LAI was the dominant reason for increased dry matter accumulation during 20 days after heading.
- Taxon
- riceOryza sativat0
- Outcome
- dry matter accumulated during 20 days after headinge0
- Direction
- increasee0
- Qualifier
- slowed decline of LAIe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the dominant reason for the increase of dry matter accumulated during 20 days after heading was the slowed decline of LAI.”
t0“free-air CO2 enrichment on biomass accumulation and distribution in rice”
Claim · model-written summary
Decreased NAR mainly caused lower dry matter accumulation from 20 days after heading to maturity.
- Taxon
- riceOryza sativat0
- Outcome
- dry matter accumulated from 20th day to maturitye0
- Direction
- declinee0
- Qualifier
- decrease of NARe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The decline of dry matter accumulated from 20th day to maturity was mainly caused by the decrease of NAR.”
t0“free-air CO2 enrichment on biomass accumulation and distribution in rice”
Claim · model-written summary
FACE increased dry matter allocation to stem and sheath.
- Taxon
- riceOryza sativat0
- Organ / stage
- stem and sheathe0
- Treatment
- FACE treatmente0
- Outcome
- percentage of dry matter distributed in stem and sheathe0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The percentage of dry matter distributed in stem and sheath increased under FACE treatment”
t0“free-air CO2 enrichment on biomass accumulation and distribution in rice”
Claim · model-written summary
FACE decreased dry matter allocation to leaves.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The percentage of dry matter distributed in stem and sheath increased under FACE treatment, while that in leaf decreased”
t0“free-air CO2 enrichment on biomass accumulation and distribution in rice”
Claim · model-written summary
FACE did not significantly change dry matter allocation to panicles.
- Taxon
- riceOryza sativat0
- Organ / stage
- paniclee0
- Treatment
- FACEe0
- Outcome
- paniclee0
- Direction
- no significant changee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The percentage of dry matter distributed in stem and sheath increased under FACE treatment, while that in leaf decreased, and that in panicle showed no significant change.”
t0“free-air CO2 enrichment on biomass accumulation and distribution in rice”
Claim · model-written summary
FACE significantly elevated soluble sugar content and amount in stem and sheath at heading.
- Taxon
- riceOryza sativat0
- Organ / stage
- stem and sheath at headinge0
- Treatment
- FACEe0
- Outcome
- content (%) and amount of soluble sugare0
- Direction
- elevatede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The content (%) and amount of soluble sugar and starch in stem and sheath at heading was significantly elevated under FACE.”
t0“free-air CO2 enrichment on biomass accumulation and distribution in rice”
Claim · model-written summary
FACE significantly elevated starch content and amount in stem and sheath at heading.
- Taxon
- riceOryza sativat0
- Organ / stage
- stem and sheath at headinge0
- Treatment
- FACEe0
- Outcome
- starche0
- Direction
- elevatede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The content (%) and amount of soluble sugar and starch in stem and sheath at heading was significantly elevated under FACE.”
t0“free-air CO2 enrichment on biomass accumulation and distribution in rice”
Claim · model-written summary
The authors state that increasing biomass could significantly improve rice grain yield under FACE.
- Taxon
- riceOryza sativae0
- Outcome
- grain yielde0
- Direction
- improvede0
- Qualifier
- raising biomasse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The grain yield of rice under FACE treatment could be significantly improved by raising biomass.”
t0“free-air CO2 enrichment on biomass accumulation and distribution in rice”
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